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That's an unnatural act for a rocket.
這對(duì)于火箭來(lái)說(shuō)，不是一種自然的行為。
The third stage has a camera.
第三次發(fā)射，火箭上有一個(gè)攝像機(jī)。
We call it rocketcam.
我們稱之為火箭攝像機(jī)。
And it's pointed at the hypersonic glider.
用于拍攝特超音速滑翔機(jī)。
This is the actual rocketcam footage from flight one.
這是一段來(lái)自首次飛行的真實(shí)錄像。
Now to conceal the shape, we changed the aspect ratio a little bit.
我們稍稍改動(dòng)了縱橫比來(lái)遮掩滑翔機(jī)的樣子。
But this is what it looks like from the third stage of the rocket looking at the unmanned glider as it heads into the atmosphere back towards Earth.
但這正是從火箭發(fā)射的第三階段上看到的無(wú)人操縱滑翔機(jī)的樣子。它沖進(jìn)大氣層返回地球。
We've flown twice.
我們飛了兩次。
In the first flight,no aerodynamic control of the vehicle.
頭一次沒(méi)有對(duì)滑翔機(jī)操控。
But we collected more hypersonic flight data than in 30 years of ground-based testing combined.
但我們也收集了比過(guò)去30年間地面測(cè)試總和還多的數(shù)據(jù)。
And in the second flight,three minutes of fully-controlled,aerodynamic flight at Mach 20.
第二次飛行是歷時(shí)3分鐘的全程操控，空氣動(dòng)力飛行的速度是20馬赫。
We must fly again, because amazing, never-been-done-before things require that you fly.
我們還要再飛一次。因?yàn)樯衿娴那叭藦奈磭L試過(guò)的事物促使我們飛行。
You can't learn to fly at Mach 20 unless you fly.
你飛不了20馬赫，除非你繼續(xù)飛。
And while there's no substitute for speed, maneuverability is a very close second.
雖然速度很重要，操縱性也同樣不可忽視。
If a Mach 20 glider takes 11 minutes and 20 seconds to get from New York to Long Beach,a hummingbird would take,well, days.
如果20馬赫的滑翔機(jī)花11分鐘20秒。從紐約飛到長(zhǎng)灘，那么，一只蜂鳥大概要幾天。
You see, hummingbirds are not hypersonic, but they are maneuverable.
你知道，蜂鳥不是特超音速。但是操縱性很好。
In fact, the hummingbird is the only bird that can fly backwards.
事實(shí)上，蜂鳥是唯一能后退飛行的鳥。
It can fly up, down,forwards, backwards,even upside-down.
它能飛上飛下。向前飛，向后飛。甚至倒過(guò)來(lái)飛。
And so if we wanted to fly in this room or places where humans can't go, small enough and maneuverable enough we'd need an aircraft to do so.
所以，如果我們想在這個(gè)房間里或者人類無(wú)法到達(dá)的地方飛行。我們就需要飛機(jī)。體積小，操作性強(qiáng)方可達(dá)到此要求。
This is a hummingbird drone.
這是個(gè)蜂鳥無(wú)人駕駛飛機(jī)。
It can fly in all directions,even backwards.
它能向各個(gè)方向飛行。甚至向后飛。
It can hover and rotate.
它能懸停和旋轉(zhuǎn)。
This prototype aircraft is equipped with a video camera.
這個(gè)原型機(jī)配有一個(gè)視頻攝像頭。
It weighs less than one AA battery.
它比一節(jié)AA電池還輕。
It does not eat nectar.
還不用吃花蜜。
In 2008,it flew for a whopping 20 seconds,a year later,two minutes,then six, eventually 11.
2008年它破天荒地飛了20秒。一年后是2分鐘。然后是6分鐘。最終飛了11分鐘。
Many prototypes crashed many.
很多原型機(jī)都摔爛了—很多。
But there's no way to learn to fly like a hummingbird unless you fly.
但是無(wú)法學(xué)會(huì)象蜂鳥一樣飛。除非不停地學(xué)習(xí)飛行。
It's beautiful, isn't it.Wow.
很美妙，是吧。哇。
It's great.
非常棒。
